Chromatid one copy of a dna molecule that has been

This preview shows page 18 - 20 out of 25 pages.

during cell division.Chromatid, one copy of a DNA molecule that has been replicated, while still attached at the centromere.Chromatin¸ a complex of DNA and protein that is partially condensed to better fit in a cell’s nucleus. Cleavage furrow¸ the indention of the cell membrane that occurs in preparation for cytokinesis. Condensin, proteins that bind to DNA, creating coiled loops, compacting the DNA.Cyclin, a group of proteins that regulate the progression of a cell through the cell cycles, together with cyclin-dependent kinase (Cdk).Cyclin-dependent kinase, a group of proteins that bind with cyclin and help regulate a cell’s progression through its cell cycle, by either activating or deactivating other proteinsby phosphorylation. Cytokinesis¸ the division of the cellular membrane into 2 separate daughter cells.Diploid, a cell, nucleus, or organism that contains 2 sets of chromosomes (2n).G0phase, a resting or maintenance phase where the cell is not preparing to divide (quiescent).G1phase, the first growth phase of interphase when the cell is growing and begins replicating organelle.G2phase, the second growth phase of interphase, when the cell continues to grow and finishes replicating organelle.Gamete, a haploid reproductive sex cell (sperm, pollen grain, egg, ova).Gene, a unit of heredity, genotype along with environmental factors determines phenotype of an organism, a sequence of DNA that codes for a protein.Haploid, a cell nucleus or organism that only has one set of chromosomes (n).Histone, a protein that associates with DNA to form nucleosomes and help condense the DNA strand.Homologous chromosomes, pairs of chromosomes (one from each parent) that code for the same genetic characteristics but may contain different traits for those characteristics (alleles) from each parent.Interphase, the period of cell cycle between cell division that includes G1, S, and G2 phases, when the cell grows, replicates DNA and prepares for division.
Karyokinesis¸ the division of a cell’s nucleus during mitosis.Kinetochore, a protein structure that associates with the centromere during prometaphaseand attracts spindle microtubules.Locus, the position of a gene on a chromosome.Metaphase, a stage of mitosis in which the chromosomes line up in the center of the cell,on the equatorial plane.Mitosis(karyokinesis), a period of cell cycle in which the genetic material is divided into2 identical nuclei, includes prophase, prometaphase, metaphase, anaphase, and telophase. Used as a form of asexual reproduction.Mitotic phase, a period of the cell cycle in which mitosis and cytokinesis take place, resulting in 2 identical sister cells.Mitotic spindle, a series of microtubules that govern the movement of chromosomes during cell division.Nucleosome, a subunit of chromatin that is comprised of a short portion of DNA (146 base pairs) wrapped around a core of 8 histone proteins.P21¸a tumor suppressing protein (gene) that inhibits the progression of the cell cycle; controlled by p53.P53

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture